Hey student!

Thank you for these great questions. Let's see if I can help clarify them for you!

1. When you explained that you thought "the market can't be insatiable, only people can feel insatiable," you misunderstood the context of the sentence. The market = people. The market means the people who are looking to buy comic books. So insatiable is being used to describe people.  Also, the difference between the meaning of insatiable and uncontrollable is that uncontrollable is only used in negative contexts, but insatiable can be used in both positive and negative contexts. Insatiable can mean "a strong desire," and the sentence "an insatiable hunger for success" means that a person really wants to achieve success, which isn't negative. However, uncontrollable means "unable to be controlled or managed," and this word can only be used to express negative meaning (i.e. Jack has an uncontrollable attitude --> means that Jack has a "bad" attitude that can't be stopped). So, since the sentence in the passage isn't used to express a negative meaning, uncontrollable is not acceptable. Hope this explanation was clearer. =)

2. I agree with part of your reasoning; I would not choose "B" mainly because it is "wordy." In other words, "C" expresses the same meaning as "B" in a more concise way. "these companies" is actually specific since it refers to the word "publishers" that appeared before it. "Publishers" can refer to either "people" or companies (publishers = publishing companies). "C" does a better job of combining the two sentences in a concise way. =)

3.  Good question. If you plug in (D), you get an incomplete sentence. "a number of lawsuits over copyrights waged by the children of these creators to secure the royalties..." is missing a main verb. The phrase "waged by the children" is actually an adjective phrase that is created with the past participle "waged." If the sentence said "were waged," it would now be a verb (a passive voice verb phrase). But by itself "waged" is an adjective in the sentence.

The tricky thing is that "waged" could also be a verb when used in the active voice (i.e. I waged war against my brothers.). Now, the word "waged" is used as a past tense verb. There are some verbs where the past participle and the past tense are written in the same way (i.e. played, watched, cooked, etc...). So in these cases, you need to consider how it is used in the sentence.

The piano played by the boy...

The movie watched by the family...

These examples use the past participle verb forms to create adjective phrases (past participle phrases), which means that these sentences are not complete sentences.

Hope these explanations help! Keep moving forward!!

You got this!!